A tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata.They may also be used for microtunneling.
The Best Products for Tough Jobs You won’t be alone when you buy a Robbins TBM. If you are planning to tunnel through rock, you want a TBM from a manufacturer who will support you as your partner throughout the project, anywhere in the world.
Ranked amongst the most important tunnel-boring machine manufacturers on the world market, NFM Technologies provides its customers with tunneling machines of 4 to more than 15 metres in diameter, suited to all types of geology, acknowledged for their reliability and robustness.
Photo of United States Air Force tunnel boring machine at Little Skull Mountain, Nevada, USA, December 1982. There are many rumors of secret military tunnels in the United States.
This book covers the fundamentals of tunneling machine technology: drilling, tunneling, waste removal and securing. It treats methods of rock classification for the machinery concerned as well as legal issues, using numerous example projects to reflect the state of technology, as well as problematic cases and solutions.
The Mayor of London and the Secretary of State for Transport today revealed the giant 1,000 tonne tunnel boring machines that will carve Crossrail’s tunnels under the capital. The machines are around 150 metres long, the equivalent to 14 London buses end to end and weigh around 1000 tonnes ...
Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and is the world's largest earth pressure balance tunnel boring machine, at a cutterhead diameter of 57.5 feet (17.5 m) across.
The 47.2-ft diameter rock Robbins TBM used for the Niagara Tunnel project was the largest rock TBM in the world.
Tunnel Boring Machines The Next Generation of Versatility Crossover TBMs take the Guesswork out of Mixed Ground Tunneling. Whether the geology of your project includes sections of hard rock, soft ground, boulders, or a little bit of everything, Robbins has a solution for you.
We provide Directional Drilling, Auger Boring, Hard Rock Drilling, Tunnel Boring & Hand Tunneling operations in Arizona, Nevada, New Mexico & Texas.
KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.